188 entries under adjective topic. ×

6
ineligible(weak, inadequate, useless, incompetent)
6
insufficient(weak, inadequate, useless, incompetent)
5
inapt(suitable, incompetent, impotence)
4
futile(weak, inferior, inadequate, limited)
4
improper(dull, flat, slow, awkward)
4
incapacitated(weak, skill, inadequate, useless)
4
not able(expression, idiom, skill, talent)
4
not up to(expression, idiom, weak, skill)
4
unapt(useless, incompetent, unfit, unqualified)
4
untalented(awkward, inept, educated, overall)
4
worthless(inferior, inadequate, limited, feeble)
3
faulty(useless, unfit)
3
impuissant(skill, talent, inept, powerless)
3
inappropriate(dull, flat, slow, awkward)
3
inefficacious(skill, inferior, inadequate, limited)
3
inoperative(skill, inferior, inadequate, limited)
3
maladroit(dull, flat, slow, inadequate)
3
not equal to(expression, idiom, weak, skill)
3
poor(weak, inadequate, unfit, unqualified)
3
talentless(educated, overall, well-informed)
10 years ago|12k views|share |citing 
APASmart Define. (2016). unable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unable thesaurus" https://smartdefine.org/unable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, unable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unable/thesaurus/synonyms>.
MLASmart Define. "unable thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/unable/thesaurus/synonyms>